Year	% of total secondary
1998	2.81550002098083
1999	3.01792001724243
2000	2.76570010185242
2001	3.32712006568909
2002	3.70560002326965
2003	3.88350009918213
2007	5.91952991485596
2010	6.73815011978149
2011	7.99944019317627
2012	7.51927995681763
2013	9.21821975708008
2014	9.83922004699707
2015	10.9413003921509
2016	11.8819904327393
2017	12.3336000442505
2018	12.8971700668335
2019	12.5733804702759
2020	13.0754804611206
2021	13.4607801437378
2022	13.5605897903442